The overall number of GOP presidential ads on the airwaves this election year is comparable with 2008, but who is paying for them so far has changed significantly. The influence of SuperPACs in the race for the 2012 GOP nomination is clear, with a more than 1600 percent increase in interest-group sponsored ads aired as compared to 2008…

Even though Romney has not been on the airwaves as much as he was in 2008, his campaign and its allies have dominated the airwaves in Florida, airing almost 13,000 ads on broadcast television across the state, as of Wednesday, the 25th…

[The right-wing Koch brothers’] Americans for Prosperity has aired over 5,000 spots in battleground state markets, while [former Bush administration official Karl Rove’s] Crossroads Grassroots Policy Strategies has aired over 4,200 spots in similar markets. The American Petroleum Institute also aired around 1,500 spots.